Ray breaks the glass in Sandy's front door. That door didn't have multiple panes of glass the last time it was in frame, in the previous season's last two episodes. It was previously a door with one single large pane of glass. The same little Welcome sign is hanging on the door, so it's obviously supposed to be the same entrance door, and it has the same sidelights, but the glass is different.
Big Al's head is brought up by a guy fishing, and the medical examiner says that she recovered a bullet in the head. Big Al was shot once in the head by Mickey. He had a huge exit wound in his face, which is caused by the bullet exiting his head, which would mean that the bullet isn't still in the head.